Analysis of tilting load-lines in AlGaN/GaN broadband uniform distributed amplifiers

Malte Coers, Wolfgang Bösch

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

This paper presents a general analysis of tilting load-lines in uniform distributed power amplifiers (UDPA). By means of an ideal equivalent circuit, the dependency of the load-line behavior of the first transistor on design parameters is examined. A DC-15 GHz UDPA designed in a 0.25 µm AlGaN/GaN technology is employed to verify the undertaken theoretical analysis by large-signal simulation and thermal IR-imaging results. The theoretical analysis shows that the two most effective remedies are transistor tapering and drain-line tapering to maintain the first transistor in the safe operating region. Nevertheless, in the presented AlGaN/GaN UDPA design power absorption by the first transistor at certain frequencies could not be suppressed by drain-line tapering due to design specific constraints.

Originalspracheenglisch
Titel8th German Microwave Conference, GeMiC 2014
Herausgeber (Verlag)VDE-Verlag GmbH, Berlin, Offenbach
ISBN (elektronisch)9783800735853
PublikationsstatusVeröffentlicht - 1 Jan 2019
Veranstaltung8th German Microwave Conference, GeMiC 2014 - Aachen, Deutschland
Dauer: 10 Mär 201412 Mär 2014

Publikationsreihe

Name8th German Microwave Conference, GeMiC 2014

Konferenz

Konferenz8th German Microwave Conference, GeMiC 2014
LandDeutschland
OrtAachen
Zeitraum10/03/1412/03/14

ASJC Scopus subject areas

  • !!Electrical and Electronic Engineering

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